What Steam Game Have You Spent The Most Hours Playing?

CS 1.6 : 2442h
Dota 2 : 460h

Counter-Strike: Source - 2763 hrs.

390 hours of Civ V.

tf2 1154 hours

Almost 800 hours on worms reloaded

1,417 hrs Dota2
and i have about ~4000 hours in wc3dota

33 Hours Chivarly

Borderlands 2

Team Fortress 2 - 135 hours

Minecraft probably way over 1000 hours but i have no proof or secure source xD

Puzzler World 2
121.1 hrs on record

Don't judge me.

Trine 2 - 34 hours.

My game is TrackMania Nations Forever. im at 98 hrs

Counter Strike Source

Fallout New Vegas and Dragon's Age, more than 100 hours each.

Team Fortress 2 with a lot of idling.

651 hours on gmod.

Terraria, with 68+ hours :P

Terraria, with 68+ hours :P

CSGO FM2013

Altitude 1500+ hours. It's fun.

Dota 2, about 1k hours ;D

Mount & Blade Warband - 174 hours

For me it is Counter-Strike 1.6 for over 2300 hours.

dota 2 680 hours